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Chess Opening Theory/1. e4/1...e5/2. Nf3/2...Nc6/3. Bb5/3...Nf6/4. O-O

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< Chess Opening Theory | 1. e4 | 1...e5 | 2. Nf3 | 2...Nc6 | 3. Bb5 | 3...Nf6
The latest reviewed version was checked on 2 February 2022. There are 2 pending changes awaiting review.
Ruy Lopez:Open Game
a b c d e f g h
8a8 black rookb8 black kingc8 black bishopd8 black queene8 black kingf8 black bishopg8 black kingh8 black rook8
7a7 black pawnb7 black pawnc7 black pawnd7 black pawne7 black kingf7 black pawng7 black pawnh7 black pawn7
6a6 black kingb6 black kingc6 black knightd6 black kinge6 black kingf6 black knightg6 black kingh6 black king6
5a5 black kingb5 white bishopc5 black kingd5 black kinge5 black pawnf5 black kingg5 black kingh5 black king5
4a4 black kingb4 black kingc4 black kingd4 black kinge4 white pawnf4 black kingg4 black kingh4 black king4
3a3 black kingb3 black kingc3 black kingd3 black kinge3 black kingf3 white knightg3 black kingh3 black king3
2a2 white pawnb2 white pawnc2 white pawnd2 white pawne2 black kingf2 white pawng2 white pawnh2 white pawn2
1a1 white rookb1 white knightc1 white bishopd1 white queene1 black kingf1 white rookg1 white kingh1 black king1
a b c d e f g h
Position in Forsyth-Edwards Notation (FEN)

r1bqkb1r/pppp1ppp/2n2n2/1B2p3/4P3/5N2/PPPP1PPP/RNBQ1RK1 b

Moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O
Parent: Ruy Lopez

Ruy Lopez:Open Game

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4.O-O is the most common reply to the Berlin Defence. This move protects the king by moving it out of the center. It also brings the rook closer to the center. If 4...Nxe4, then 5.Re1, and when the knight retreats, e5 falls after 6.Nxe5. If Black plays 4...Be7 (a rare reply), White should also play 5.Re1, preventing the threat of 5...Nxe4 6.Re1 Nd6; if 7.Nxe5, there is 7... Nxb5.

Theory table

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For explanation of theory tables, see theory table and for notation, see algebraic notation..

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O
4
Open Ruy Lopez ...
Nxe4 		=
...
d6		 =
...
Bc5		 =
...
Ng4		 =

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References

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Wikipedia has related information at Ruy Lopez


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